PSQ500QD MVOLT SD Quick Disconnect Emergency Ballast with Battery Control Module | Low Profile Lumens | 120-227 Volts | UL Listed (500L Back Up)

Ensure continuous lighting during power interruptions with the Power Sentry Emergency Battery Backup (Model PSQ500QD MVOLT SD). This dependable, high-output unit supplies emergency power to one or two T8 or long 4-pin compact fluorescent lamps for up to 90 minutes, providing up to 500 lumens of illumination when it’s needed most. It is compatible with most 2′–5′ T8 and long compact (4-pin) lamps rated between 17W and 40W. A patented Quick-Disconnect system enables fast, straightforward installation and easy replacement. The durable thermoplastic and metal housing resists impact and corrosion, while the low-profile design fits neatly into tight fixture spaces. A polarized quick-connect pilot light and test switch assembly simplifies installation as well as routine testing and maintenance. UL listed and backed by a 5-year limited warranty, the unit features a long-life Ni-Cad battery that fully recharges within 24 hours and delivers an expected service life of 7–9 years. Designed for versatility, it operates across a wide 120V–277V voltage range and includes an integrated pilot light and test switch for reliable performance and added peace of mind.

• HIGH-PERFORMANCE BATTERY BACKUP: The Power Sentry emergency battery pack keeps fluorescent fixtures illuminated during power outages, enabling the same shop light to function for both everyday and emergency lighting.
• 90-MINUTE RUNTIME: In the event of a power loss, the unit automatically switches to emergency mode and powers one or two lamps for up to 90 minutes. After discharge, the battery begins recharging immediately and reaches a full charge within 24 hours.
• WIDE COMPATIBILITY: Designed for use with most 2′–5′ T8 lamps and long 4-pin compact fluorescent lamps, delivering up to 500 lumens of initial output for a single lamp.
• FLEXIBLE INSTALLATION: A patented Quick-Disconnect connector system enables fast, simple replacement—even in enclosed or gasketed fixtures. The rugged thermoplastic and metal housing resists impact, scratches, and corrosion.
• PRODUCT SPECIFICATIONS: The compact design (9.4" L x 2.19" W x 1.18" H) fits a wide range of fluorescent fixtures. It features a long-lasting 4.8V Ni-Cad battery with a 7–9 year life expectancy, supports MVOLT operation (120V–277V, 50–60 Hz), and includes a pilot light and test switch. Backed by a 5-year limited warranty.